Head-motion for ore-concentrators.



' H. EGGERS.

HEAD MOTION FOR ORE GONCENTRATORS. APPLICATION PILBD'P B. 15, 1910.

Patented Sept. 10, 1912.

4 SHEETS-SHEET 1.

Q Vi/hwom H. EGGERS. HEAD MOTION FOR ORE CONGBLITRATORSx APPLICATION FILED FEB. 15,1910.

1,038,322, Patented Sept. 10, 1912.

' IS-SHEET 2.

E Z Y Y 481111};

numulllll 'WMAAOM I H. BGGERS.

HEAD MOTION FOR ORE UONCENTRATORS.

APPLICATION FILED FEB. 15,1910.

1,038,322, Patented Sept. 10, 1912.

4 SHEBTS-SHEET 3.

H. EGGBRS.

HEAD MOTION FOR ORE CONGENTRATORSK APPLICATION FILED FEB. 15, i910,

Patented Sept. 10, 1912.

4 sums-sum 4.

Z EIi, CQLQRADO, .ASSIGNOR TQ THE MINlE & SHELTER SUPPLY -31, GTE DENVER, COLORADO, A CORPORATION.

HEHAD-MQTI JN ORE-CONCENTRATORS.

nesssee .i g iaieaticn filed Eebrucry 15, 1910. serial as. 543,837.

To all whom it mc'y l lo it known ih Henri? seems, a citizen of the llrncu es, residing in the city and county of Denver and. State of Colo;- rado, have invcnied certain new and useful Improvements in Hcad-l /loiions for (he Concentrators, oi which the following is a specific-at? My invention head motions is objec oncemi I ore concentintors, and de mechanism for mow L in a state of st, in the di-- the discharge e. vi 1 a cow iantiy eccclerating motion to the end oft-he lien reversing as quickly as possible with a maximum of speed at the time of reversing, which speed gradually diminishes until the position of rest is reached, preparatory to the commencement of another for-- ward stroke. This has the eiiect of carrying the material resting upon the table forward a certain distance zit each vforward stroke of the table by virtue or" the momentum given the material by said forward movement of the table, and the ra oid return causes the table to pull 1... n on er the material, as it were, owing to the inertia of the material thereon, thereby insuring a more or less progressive motion. 'to the material, notwithstanding the fact that the motion of the table is reciprocatory. This efiect has been pro need by various forms of toggles, normolly disposed at a FDONB'OI less acute angle to each other, and the more acute this angle becomes, the longer is the stroke that is obtained by this means with the corresponding throw of the eccentric. For example, in the patent to Wilfiey, Jo. 590,675, dated Sept.

28, 1897, the movement of the table caused by the toggles is greatest when. the toggles are at the sharpest or smallest angle in relation to each other. Hence the movement of the table is greatest at the beginning of the stroke, and less at the end of the stroke. This may be termed a differential. It is ev dent in this movement, that when the stroke is shortened by increasing'the angle between the toggles, that the diilcrentiahdhat is to say, the speed at the beginning as compared with the end or" the stroke-is less than when the angle is smaller or more acute. It is impossible with this arrangement to shorten the stroke without causing a loss'of differential in the stroke. In Wi'lfiey Patent-s Nos. 7 19,4201, patented January 27, 1903, and

rm tion of Letters Patent.

atented Sept. 10, 1912.

783,342, patented February" 21,1905, the same conditions arev present, as, a bove,'with the exception that the toggles are below the center line instead of above. Then there is the patent to Darragh and King, known .as the King-Darragh head motion, disclosed in Letters Patent N 0. 506,035, October 3, 1893, in which the relative differential can. be maintained, althou h the stroke be shortened, for the reason t at the angle between the toggles at the commencement of the stroke is not changed. The length of throw is obtained by moving the part Lof the pat ent in either direction on the extended arm of the rocking lever D of the toggle. Otherwise this movement resolves itself into precisely the same motion as in the Wilfley head motion. Finally, I might call attention to the Boylan head motion, of Patent No. 901,585, of October 20, 19 08, This head motion is similar-to the second form of the lVilfley head motion in its main features; but in addition is provided with a rocking pitman which has an adjustment to shorten or lengthen the lever arm of the pitman. This adjustment of the lever length gives the table a variable stroke, while maintaining the same throwof the eccentric, and the same angle betwen the toggles, thus preserving the differential of the stroke, though the latter is shortened, The stroke, however, can also be shortened by the vertical adjustment of the toggle seat, and when so adjusted, a change in the diiferential Will take place very similar. to that ofthe first-mentioned Wiliiey head motion.

My present invention takes advamage of the features of the VVilfley c0nstruction,and comprises in addition thereto a rocker arm or lever, which is positively controlled at one end by the main eccentric shaft while delivering, at the other end, a motion equii alent to the toggle motionof the WVilfley head motion; but theswing of the lever results in adding to-the toggle motion on the return stroke, and takes from it on the forward stroke.

My present invention provides further for susceptibility ofadjustmcnt While the table 'is in motion, so-that the operator can watch the results taking place upon the table, and adjust the head motion accordingly.

In the accompanying drawings :F1gure 1]. iso view in side elevationon an enlarged scale, Fig. 2 is a top plan view of the base, 19

Fig. 3 is a view in side elevation Of the latter, Fig. 4 is an end View, Fig. 5 is a top view of the connecting pitinan, Fig. 6 is a YlEE W of 'l he lnain pitroan taken at right angles to the View shown in Fi l, and Figs, "I, S, 9, l0, l1 and 12 are de-tuilr.

The i'nnneri'rl 1 indicates the base, and 2 is a thriu-st-hm', the ends 3, 3, of which are fittzitl and ndapted to reciprocate in boxes 4', 4, provided there' 7 i=5 of the lame l, s: 4 vscre up wear in tlieee lanes l the hose, the irillow block C l, are cre I v preferably being cost inlegrnl with the liar-xx and their ll'unrtion hazing to ottord support for the crank shaft 7, which rotates in suitable journal boxes, 8, 8. The niuiin pitmen J is iournaled a t its upper end upon the crank of shaft 7. and extends doi'vnward y. as xhonn in. Fig. l, Wl'lQIQ it is provided with the toggle Feats 10, 1.0, in which the inner ends oi the toggles 11, 11f, hear.

A root 1 flllil 12 is fulcriuned. through the trunnio 133. 13, in the hearings M, M,

formed in llir pillaro 153, 15., extending up Wordly from the hose. The outer or for and end of the toggle 11 ham ite looming in a'togg'lc seal 16 carried in this rocker arm at a point below ile fulcrum, Wherezn the ()liliel or rear end of the other toggle U, has its hrnring in a toggle seat 17 supported in a stroke-mljusting hlork l9 in the rear oiul of the thrust hair, where its; position and elevation may he unlinoted and rngulatcd l. means of the s mire-adjusting hand wheel 18, it need he, while the machine is; in our 'tion.

A (tormenting rod 20 extends from the crank, shaft 7 to some point on the rocker arm 12, this latter point preferol'ily he variable. In the form of ronnecting rod illustrat -d in Fig. 5 it is forked or hiturcated at one end. to straddle the main pita hand-screw this hai'ul-serew 23, the block 2 may he raised or lowered, while the inaohiue in motion, to regulate the stroke of the rocker arm, and a hand-wheel 26 in the upper end of the rocker arm is turned to lock the block 22 when adjusted to the required po sition. This also is so located and arranged that it may he turned while the machine is i i in motion.

it tension rod .57 extends from l'll'u rocker arm 12 to the pilinnn 9, and has a spring E28 thereon, and a nut 29 provided for varying the tension of the spring. The purpose of the tension rod and ite spring 28 is to keep the rocker arm or lever 12, connrmting rod 520, and pitzoan J in llr-xiblo conjunction with one another, A. still spring 30 is interposed hetwoon :1. lug 31. depending from the thrr liar, and the Washer 32, which latter adjuetod by means of the set screw 3:,- turnlng in a not ill, depending from the hour of u'hirh screw the ten) is adjusted,

While I have shown but varying" the stroke of the "hruslx bar, it is obvious that the amino rv 5i might he olw tained by an adjustment either at the fulcrum, or at the l xairing point of the toggle 11 and I have merely selected the most con venient of? the three, heoauer of the facility with which the stroke me he regulated, while the machine is in motion, which is in. desideratum, because it enables the operator to watoh tl results tukiiiig place upon the table, and to adjust the head motion aothe spring 30 em: means of eordingly. without continually stopping and slerting lho nmel'iine to do it,

From the foregoing it will be observe-u that the outer bta (1.. o aarinhle point. Lint to "try, "it is not fixed, and it ei'nruneimes to more a time when. the pitinan in on its. (lead mentor, and the toggle undzi-r ordinary oiniditions, in entire; hut lln'ougu tho medium of the coniua-ting rod :20, a stroke hnpartedto the marker arm or lover 1'3 at a period when the pit-roan 9 is: least l or This has the efieet of advancing the support of the outer end of tho toggle 11, thus adding the movement of the lower end of the rm:v 5: arm or lever 12 to the movement created by the toggle joint through the pitmun. 9, the result of which is that the thrust-liar travels the major portion of the length of its; stroke during a iiproximately the first quarter revolution of the crank shaft. The remainder of the. :allrgnre takes place before the completion of the first half revolution of the' .lhc table, the length of travel of the lower end of the rocker arm is deducted from the stroke or the toggle ]()lnt-. The effect upon the table itself is readily epprecihted, as it imparts a relatively slow initial outward or the toggle 11' 1s forward movement to the table, so that the particles move with the table, after which,

toward the end of the forward stroke, the

motion is accelerated, whereas on the return drawn, or pulled back from under them,

which has the effect of progressively advancing the material of the greater specific gravities lengthwise over the surface of the table. Whilethis motion is going on, the adjusting parts are so arranged and located that they are susceptible of manipulation while the table is doing its work, enabling the operator to watch the results going on. and to adjust the table accordingl;

In addition to the slight variations which have been suggested, it is evident that others might be made, and still come within the scope of the invention; and hence I do not wish to limit myself to the exact Construction set forth, but

what I claim as new and desire to secure by Having fully described my invention,

Letters Patent, is:-

1. 'The combination with a base and a movable draw-bar supported thereon, of a lever fulcrumed on the base, and a drive shaft having a crank thereon which has direct connection with the lever at one point and indirect connection with the lever at another point and also with the draw-bar,

and means for shifting and adjusting the point of direct connection with the lever.

2. Thecombination with a base and a movable draw-bar supported thereon, of a lever fulorumed on the base and a drive,

shaft having a crank thereon which has direct connection with the lever at one point, and indirect connection with the lever directly to the lever and draw-bar.

. 4. The combination with a base, and a movable draw-bar, of a lever fulcrumed on the base, a drive shaft, and means for connecting both the draw-bar and lever with the drive shaft, the connection with the lever being at two different points, and

said points on opposite sides of the fulcrum. 5. The combination with a base, and a I movable draw-bar, of a lever fulcrumed on the base, adrive shaft, and means for eccentrically connecting the drive shaft with both the drambar and lever, the eccentric connection witht-he lever. being at two different points, said points at opposite sides of the fulcrum, one of these points of connection being adjustable,

6. The combination with a base, and a movable draw-bar, of a lever fulcrumed on the base, a drive shaft, and means for eccentrically connecting the drive shaft with both the draw-bar and lever, the eccentric connection with the lever being at two different points, said points at opposite sides of the fiilcrum, one of these points of connection being adjustable whilethe lever is in motion.

7 The comblnauon of abase, a draw-bar movably connected therewith, a yielding device for exerting pressure upon the drawbar in one direction, a crank shaft, a lever fulcrumed'on the base, toggles extending be tween one end of the lever and the draw-bar, two oscillating means extending from the crank shaft, one to a point between the inner ends of the toggles, and the other to the lever 8. The combination with a base, a drawbar movably connected thereizlxh, and a crank-shaft, of a lever fulcru base, a pitman, and a connecting-rod extending from the crank-shaft, the latter to the lever, toggle mechanism, the outer ends of which rest on movable supports, one being the lever and the other the draw-bar, and the inner ends connected with the pitman whereby the motion of the lever is transmitted to the draw-bar, the point of connection of the connecting-rod with the lever being adjustable, said adjustable means comprising a bearing-block slidably coned on the.

nected with the lever and having screwteeth, and a screw carried .by the lever in position to engage said screw-teeth.

9. The combination with a base, a drawbar movably connected therewith, and a crank-shaft, of a lever fulcrumed on the base, a pitman, and a connecting-rod extend ing from the crank-shaft, the latter to the lever, toggle mechanism, the outer ends of the lever and the other the draw-bar, and the inner ends connected with thepitman whereby the motion of the lever is transmitted to the draw-bar, the point of connection of the connecting-rod with the lever being adjustable, said adjustable means comprising a bearing-block' slidably connected with the lever and having screw-teeth, a screw car-' ried by the lever in position to engage said screw-teeth, and'means carried by the lever for locking hebearing-block in its set position.

10. Ihe combination with a base, a drawbar movably connected therewith, a spring extenorng between the base and draw-bar, and a driveshaft, of a lever, a toggle extending between one end of the lever and the; draw-bar, two oscillatory devices extending i drive shaft and sin centimeter the icre r,

her mom extenelh uncle tending between drmwbur, two one. from an eccentric on.

the klll .L'It, one connected with the toggle, and the other with the lever, find 11?. tension device connected with the lever.

'12. The combination with {L case a drinw bar monthly connected therewith, n, sgiiring' extending hetw r hose and drew-liar, 1i er, 1: to gle extending between-one end of thc lcrer .ntl. the throw bar, two oscillatory clevi extending from an eccentric on the thrive sl'nitt, one connected with the tog-g1 e, and the other with the lever, and a tension device eonnet ing; the lever with one Oili said oscillatory devices.

The combination with a three, a l'l)'a W- be" inomlily connected t-l'ierewith, a spring extending between the louse and draw-liar,

and a (hive slmit, a toggle extending be tween one encl of the lever and the draw-bar, two oscillatory devices extending from an eccentric on the drive shaft, one connected with the lo ie, and the other w 1th the lever, the point o connection with the lever being adjustable.

let. The combination with 11v hose, drewhnr, and shaft, of a, rocker arm or lever fulcrimietl on the base, devices elm the shaft to the lcv' at oppo: te e r tiilcruni, one of sci with the lever bei variable, t nietlns tor lll'Zl-DS :lnit'lting the motion. of the she-ft to the row- 1g troin es of lts "iinotion of a, iJk'tllQ, a drawnnectcd therewith, a yielding prcesinie upon. the draw- 7 ion, {1 cram]; shaft, and a s e itentling between one end of mil (lraw-lmr, two oscillating till 1 from the crankshaft, one to a, peint J6 1 en the inner ends of the tug glue, and. the other to the lever, and a tension re connecting the lever with one of said osc llating means.

16. The combination of a base, a slidable -sirin nctuutecl drawlmr su orterl thereon, e crankshaft, a lever fulcrumed on the base, 21 pitlnnn actuated by the crank-shaft, toggles extending" from the pitman to the lEY2PW-l3LtY and the lever, and a connecting;

I'OCl extending from the crank-shaft to the toggle and the other with the differential lever whereby to impart a series of unequal 'erioble movements; to the draw-her during a single revolution of the crank-shaft.

in testimony whereof I atiix my signature in the presence of two witnesses. HENRY EGGERS.

l l il'nesses C. Hrr'r, D, EDGAR W'iLeON. 

